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fms.c revision 1.10
      1 /*	$NetBSD: fms.c,v 1.10 2001/10/03 00:04:52 augustss Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1999 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Witold J. Wnuk.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the NetBSD
     21  *	Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 /*
     40  * Forte Media FM801 Audio Device Driver
     41  */
     42 
     43 #include "mpu.h"
     44 
     45 #include <sys/param.h>
     46 #include <sys/systm.h>
     47 #include <sys/kernel.h>
     48 #include <sys/malloc.h>
     49 #include <sys/device.h>
     50 #include <sys/audioio.h>
     51 
     52 #include <uvm/uvm_extern.h>
     53 
     54 #include <machine/bus.h>
     55 #include <machine/cpu.h>
     56 
     57 #include <dev/pci/pcidevs.h>
     58 #include <dev/pci/pcivar.h>
     59 
     60 #include <dev/audio_if.h>
     61 #include <dev/mulaw.h>
     62 #include <dev/auconv.h>
     63 
     64 #include <dev/ic/ac97var.h>
     65 #include <dev/ic/mpuvar.h>
     66 
     67 #include <dev/pci/fmsvar.h>
     68 
     69 
     70 struct fms_dma {
     71 	struct fms_dma *next;
     72 	caddr_t addr;
     73 	size_t size;
     74 	bus_dmamap_t map;
     75 	bus_dma_segment_t seg;
     76 };
     77 
     78 
     79 
     80 int	fms_match __P((struct device *, struct cfdata *, void *));
     81 void	fms_attach __P((struct device *, struct device *, void *));
     82 int	fms_intr __P((void *));
     83 
     84 int	fms_open __P((void *, int));
     85 void	fms_close __P((void *));
     86 int	fms_query_encoding __P((void *, struct audio_encoding *));
     87 int	fms_set_params __P((void *, int, int, struct audio_params *,
     88 			    struct audio_params *));
     89 int	fms_round_blocksize __P((void *, int));
     90 int	fms_halt_output __P((void *));
     91 int	fms_halt_input __P((void *));
     92 int	fms_getdev __P((void *, struct audio_device *));
     93 int	fms_set_port __P((void *, mixer_ctrl_t *));
     94 int	fms_get_port __P((void *, mixer_ctrl_t *));
     95 int	fms_query_devinfo __P((void *, mixer_devinfo_t *));
     96 void	*fms_malloc __P((void *, int, size_t, int, int));
     97 void	fms_free __P((void *, void *, int));
     98 size_t	fms_round_buffersize __P((void *, int, size_t));
     99 paddr_t	fms_mappage __P((void *, void *, off_t, int));
    100 int	fms_get_props __P((void *));
    101 int	fms_trigger_output __P((void *, void *, void *, int, void (*)(void *),
    102 				void *, struct audio_params *));
    103 int	fms_trigger_input __P((void *, void *, void *, int, void (*)(void *),
    104 			       void *, struct audio_params *));
    105 
    106 struct cfattach fms_ca = {
    107 	sizeof (struct fms_softc), fms_match, fms_attach
    108 };
    109 
    110 struct audio_device fms_device = {
    111 	"Forte Media 801",
    112 	"1.0",
    113 	"fms"
    114 };
    115 
    116 
    117 struct audio_hw_if fms_hw_if = {
    118 	fms_open,
    119 	fms_close,
    120 	NULL,
    121 	fms_query_encoding,
    122 	fms_set_params,
    123 	fms_round_blocksize,
    124 	NULL,
    125 	NULL,
    126 	NULL,
    127 	NULL,
    128 	NULL,
    129 	fms_halt_output,
    130 	fms_halt_input,
    131 	NULL,
    132 	fms_getdev,
    133 	NULL,
    134 	fms_set_port,
    135 	fms_get_port,
    136 	fms_query_devinfo,
    137 	fms_malloc,
    138 	fms_free,
    139 	fms_round_buffersize,
    140 	fms_mappage,
    141 	fms_get_props,
    142 	fms_trigger_output,
    143 	fms_trigger_input,
    144 	NULL,
    145 };
    146 
    147 int	fms_attach_codec __P((void *, struct ac97_codec_if *));
    148 int	fms_read_codec __P((void *, u_int8_t, u_int16_t *));
    149 int	fms_write_codec __P((void *, u_int8_t, u_int16_t));
    150 void	fms_reset_codec __P((void *));
    151 
    152 int	fms_allocmem __P((struct fms_softc *, size_t, size_t,
    153 			  struct fms_dma *));
    154 int	fms_freemem __P((struct fms_softc *, struct fms_dma *));
    155 
    156 #define FM_PCM_VOLUME		0x00
    157 #define FM_FM_VOLUME		0x02
    158 #define FM_I2S_VOLUME		0x04
    159 #define FM_RECORD_SOURCE	0x06
    160 
    161 #define FM_PLAY_CTL		0x08
    162 #define  FM_PLAY_RATE_MASK		0x0f00
    163 #define  FM_PLAY_BUF1_LAST		0x0001
    164 #define  FM_PLAY_BUF2_LAST		0x0002
    165 #define  FM_PLAY_START			0x0020
    166 #define  FM_PLAY_PAUSE			0x0040
    167 #define  FM_PLAY_STOPNOW		0x0080
    168 #define  FM_PLAY_16BIT			0x4000
    169 #define  FM_PLAY_STEREO			0x8000
    170 
    171 #define FM_PLAY_DMALEN		0x0a
    172 #define FM_PLAY_DMABUF1		0x0c
    173 #define FM_PLAY_DMABUF2		0x10
    174 
    175 
    176 #define FM_REC_CTL		0x14
    177 #define  FM_REC_RATE_MASK		0x0f00
    178 #define  FM_REC_BUF1_LAST		0x0001
    179 #define  FM_REC_BUF2_LAST		0x0002
    180 #define  FM_REC_START			0x0020
    181 #define  FM_REC_PAUSE			0x0040
    182 #define  FM_REC_STOPNOW			0x0080
    183 #define  FM_REC_16BIT			0x4000
    184 #define  FM_REC_STEREO			0x8000
    185 
    186 
    187 #define FM_REC_DMALEN		0x16
    188 #define FM_REC_DMABUF1		0x18
    189 #define FM_REC_DMABUF2		0x1c
    190 
    191 #define FM_CODEC_CTL		0x22
    192 #define FM_VOLUME		0x26
    193 #define  FM_VOLUME_MUTE			0x8000
    194 
    195 #define FM_CODEC_CMD		0x2a
    196 #define  FM_CODEC_CMD_READ		0x0080
    197 #define  FM_CODEC_CMD_VALID		0x0100
    198 #define  FM_CODEC_CMD_BUSY		0x0200
    199 
    200 #define FM_CODEC_DATA		0x2c
    201 
    202 #define FM_IO_CTL		0x52
    203 #define FM_CARD_CTL		0x54
    204 
    205 #define FM_INTMASK		0x56
    206 #define  FM_INTMASK_PLAY		0x0001
    207 #define  FM_INTMASK_REC			0x0002
    208 #define  FM_INTMASK_VOL			0x0040
    209 #define  FM_INTMASK_MPU			0x0080
    210 
    211 #define FM_INTSTATUS		0x5a
    212 #define  FM_INTSTATUS_PLAY		0x0100
    213 #define  FM_INTSTATUS_REC		0x0200
    214 #define  FM_INTSTATUS_VOL		0x4000
    215 #define  FM_INTSTATUS_MPU		0x8000
    216 
    217 
    218 
    219 int
    220 fms_match(parent, match, aux)
    221 	struct device *parent;
    222 	struct cfdata *match;
    223 	void *aux;
    224 {
    225 	struct pci_attach_args *pa = (struct pci_attach_args *) aux;
    226 
    227 	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_FORTEMEDIA)
    228 		return 0;
    229 	if (PCI_PRODUCT(pa->pa_id) != PCI_PRODUCT_FORTEMEDIA_FM801)
    230 		return 0;
    231 
    232 	return 1;
    233 }
    234 
    235 void
    236 fms_attach(parent, self, aux)
    237 	struct device *parent;
    238 	struct device *self;
    239 	void *aux;
    240 {
    241 	struct pci_attach_args *pa = aux;
    242 	struct fms_softc *sc = (struct fms_softc *) self;
    243 	struct audio_attach_args aa;
    244 	const char *intrstr = NULL;
    245 	pci_chipset_tag_t pc = pa->pa_pc;
    246 	pcitag_t pt = pa->pa_tag;
    247 	pci_intr_handle_t ih;
    248 	int i;
    249 
    250 	u_int16_t k1;
    251 
    252 	printf(": Forte Media FM-801\n");
    253 
    254 	if (pci_intr_map(pa, &ih)) {
    255 		printf("%s: couldn't map interrupt\n", sc->sc_dev.dv_xname);
    256 		return;
    257 	}
    258 	intrstr = pci_intr_string(pc, ih);
    259 
    260 	sc->sc_ih = pci_intr_establish(pc, ih, IPL_AUDIO, fms_intr, sc);
    261 	if (sc->sc_ih == NULL) {
    262 		printf("%s: couldn't establish interrupt",sc->sc_dev.dv_xname);
    263 		if (intrstr != NULL)
    264 			printf(" at %s", intrstr);
    265 		printf("\n");
    266 		return;
    267 	}
    268 
    269 	sc->sc_dmat = pa->pa_dmat;
    270 
    271 	printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr);
    272 
    273 	if (pci_mapreg_map(pa, 0x10, PCI_MAPREG_TYPE_IO, 0, &sc->sc_iot,
    274 			   &sc->sc_ioh, &sc->sc_ioaddr, &sc->sc_iosize)) {
    275 		printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname);
    276 		return;
    277 	}
    278 
    279 	if (bus_space_subregion(sc->sc_iot, sc->sc_ioh, 0x30, 2,
    280 				&sc->sc_mpu_ioh))
    281 		panic("fms_attach: can't get mpu subregion handle");
    282 
    283 	if (bus_space_subregion(sc->sc_iot, sc->sc_ioh, 0x68, 4,
    284 				&sc->sc_opl_ioh))
    285 		panic("fms_attach: can't get opl subregion handle");
    286 
    287 	/* Disable legacy audio (SBPro compatibility) */
    288 	pci_conf_write(pc, pt, 0x40, 0);
    289 
    290 	/* Reset codec and AC'97 */
    291 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, FM_CODEC_CTL, 0x0020);
    292 	delay(2);		/* > 1us according to AC'97 documentation */
    293 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, FM_CODEC_CTL, 0x0000);
    294 	delay(1);		/* > 168.2ns according to AC'97 documentation */
    295 
    296 	/* Set up volume */
    297 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, FM_PCM_VOLUME, 0x0808);
    298 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, FM_FM_VOLUME, 0x0808);
    299 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, FM_I2S_VOLUME, 0x0808);
    300 
    301 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, FM_RECORD_SOURCE, 0x0000);
    302 
    303 	/* Unmask playback, record and mpu interrupts, mask the rest */
    304 	k1 = bus_space_read_2(sc->sc_iot, sc->sc_ioh, FM_INTMASK);
    305 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, FM_INTMASK,
    306 	    (k1 & ~(FM_INTMASK_PLAY | FM_INTMASK_REC | FM_INTMASK_MPU)) |
    307 	     FM_INTMASK_VOL);
    308 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, FM_INTSTATUS,
    309 	    FM_INTSTATUS_PLAY | FM_INTSTATUS_REC | FM_INTSTATUS_MPU |
    310 	    FM_INTSTATUS_VOL);
    311 
    312 	sc->host_if.arg = sc;
    313 	sc->host_if.attach = fms_attach_codec;
    314 	sc->host_if.read = fms_read_codec;
    315 	sc->host_if.write = fms_write_codec;
    316 	sc->host_if.reset = fms_reset_codec;
    317 
    318 	if (ac97_attach(&sc->host_if) != 0)
    319 		return;
    320 
    321 	/* Turn mute off */
    322 	for (i = 0; i < 3; i++) {
    323 		static struct {
    324 			char *class, *device;
    325 		} d[] = {
    326 			{ AudioCoutputs, AudioNmaster },
    327 			{ AudioCinputs, AudioNdac },
    328 			{ AudioCrecord, AudioNvolume }
    329 		};
    330 		struct mixer_ctrl ctl;
    331 
    332 		ctl.type = AUDIO_MIXER_ENUM;
    333 		ctl.un.ord = 0;
    334 		ctl.dev = sc->codec_if->vtbl->get_portnum_by_name(sc->codec_if,
    335 			d[i].class, d[i].device, AudioNmute);
    336 		fms_set_port(sc, &ctl);
    337 	}
    338 
    339 	audio_attach_mi(&fms_hw_if, sc, &sc->sc_dev);
    340 
    341 	aa.type = AUDIODEV_TYPE_OPL;
    342 	aa.hwif = NULL;
    343 	aa.hdl = NULL;
    344 	config_found(&sc->sc_dev, &aa, audioprint);
    345 
    346 	aa.type = AUDIODEV_TYPE_MPU;
    347 	aa.hwif = NULL;
    348 	aa.hdl = NULL;
    349 	sc->sc_mpu_dev = config_found(&sc->sc_dev, &aa, audioprint);
    350 }
    351 
    352 /*
    353  * Each AC-link frame takes 20.8us, data should be ready in next frame,
    354  * we allow more than two.
    355  */
    356 #define TIMO 50
    357 int
    358 fms_read_codec(addr, reg, val)
    359 	void *addr;
    360 	u_int8_t reg;
    361 	u_int16_t *val;
    362 {
    363 	struct fms_softc *sc = addr;
    364 	int i;
    365 
    366 	/* Poll until codec is ready */
    367 	for (i = 0; i < TIMO && bus_space_read_2(sc->sc_iot, sc->sc_ioh,
    368 		 FM_CODEC_CMD) & FM_CODEC_CMD_BUSY; i++)
    369 		delay(1);
    370 	if (i >= TIMO) {
    371 		printf("fms: codec busy\n");
    372 		return 1;
    373 	}
    374 
    375 	/* Write register index, read access */
    376 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, FM_CODEC_CMD,
    377 			  reg | FM_CODEC_CMD_READ);
    378 
    379 	/* Poll until we have valid data */
    380 	for (i = 0; i < TIMO && !(bus_space_read_2(sc->sc_iot, sc->sc_ioh,
    381 		 FM_CODEC_CMD) & FM_CODEC_CMD_VALID); i++)
    382 		delay(1);
    383 	if (i >= TIMO) {
    384 		printf("fms: no data from codec\n");
    385 		return 1;
    386 	}
    387 
    388 	/* Read data */
    389 	*val = bus_space_read_2(sc->sc_iot, sc->sc_ioh, FM_CODEC_DATA);
    390 	return 0;
    391 }
    392 
    393 int
    394 fms_write_codec(addr, reg, val)
    395 	void *addr;
    396 	u_int8_t reg;
    397 	u_int16_t val;
    398 {
    399 	struct fms_softc *sc = addr;
    400 	int i;
    401 
    402 	/* Poll until codec is ready */
    403 	for (i = 0; i < TIMO && bus_space_read_2(sc->sc_iot, sc->sc_ioh,
    404 		 FM_CODEC_CMD) & FM_CODEC_CMD_BUSY; i++)
    405 		delay(1);
    406 	if (i >= TIMO) {
    407 		printf("fms: codec busy\n");
    408 		return 1;
    409 	}
    410 
    411 	/* Write data */
    412 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, FM_CODEC_DATA, val);
    413 	/* Write index register, write access */
    414 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, FM_CODEC_CMD, reg);
    415 	return 0;
    416 }
    417 #undef TIMO
    418 
    419 int
    420 fms_attach_codec(addr, cif)
    421 	void *addr;
    422 	struct ac97_codec_if *cif;
    423 {
    424 	struct fms_softc *sc = addr;
    425 
    426 	sc->codec_if = cif;
    427 	return 0;
    428 }
    429 
    430 /* Cold Reset */
    431 void
    432 fms_reset_codec(addr)
    433 	void *addr;
    434 {
    435 	struct fms_softc *sc = addr;
    436 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, FM_CODEC_CTL, 0x0020);
    437 	delay(2);
    438 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, FM_CODEC_CTL, 0x0000);
    439 	delay(1);
    440 }
    441 
    442 int
    443 fms_intr(arg)
    444 	void *arg;
    445 {
    446 	struct fms_softc *sc = arg;
    447 	u_int16_t istat;
    448 
    449 	istat = bus_space_read_2(sc->sc_iot, sc->sc_ioh, FM_INTSTATUS);
    450 
    451 	if (istat & FM_INTSTATUS_PLAY) {
    452 		if ((sc->sc_play_nextblk += sc->sc_play_blksize) >=
    453 		     sc->sc_play_end)
    454 			sc->sc_play_nextblk = sc->sc_play_start;
    455 
    456 		bus_space_write_4(sc->sc_iot, sc->sc_ioh,
    457 		    sc->sc_play_flip++ & 1 ?
    458 		    FM_PLAY_DMABUF2 : FM_PLAY_DMABUF1, sc->sc_play_nextblk);
    459 
    460 		if (sc->sc_pintr)
    461 			sc->sc_pintr(sc->sc_parg);
    462 		else
    463 			printf("unexpected play intr\n");
    464 	}
    465 
    466 	if (istat & FM_INTSTATUS_REC) {
    467 		if ((sc->sc_rec_nextblk += sc->sc_rec_blksize) >=
    468 		     sc->sc_rec_end)
    469 			sc->sc_rec_nextblk = sc->sc_rec_start;
    470 
    471 		bus_space_write_4(sc->sc_iot, sc->sc_ioh,
    472 		    sc->sc_rec_flip++ & 1 ?
    473 		    FM_REC_DMABUF2 : FM_REC_DMABUF1, sc->sc_rec_nextblk);
    474 
    475 		if (sc->sc_rintr)
    476 			sc->sc_rintr(sc->sc_rarg);
    477 		else
    478 			printf("unexpected rec intr\n");
    479 	}
    480 
    481 #if NMPU > 0
    482 	if (istat & FM_INTSTATUS_MPU)
    483 		mpu_intr(sc->sc_mpu_dev);
    484 #endif
    485 
    486 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, FM_INTSTATUS,
    487 			  istat & (FM_INTSTATUS_PLAY | FM_INTSTATUS_REC));
    488 
    489 	return 1;
    490 }
    491 
    492 int
    493 fms_open(addr, flags)
    494 	void *addr;
    495 	int flags;
    496 {
    497 	/* UNUSED struct fms_softc *sc = addr;*/
    498 
    499 	return 0;
    500 }
    501 
    502 void
    503 fms_close(addr)
    504 	void *addr;
    505 {
    506 	/* UNUSED struct fms_softc *sc = addr;*/
    507 }
    508 
    509 int
    510 fms_query_encoding(addr, fp)
    511 	void *addr;
    512 	struct audio_encoding *fp;
    513 {
    514 
    515 	switch (fp->index) {
    516 	case 0:
    517 		strcpy(fp->name, AudioEmulaw);
    518 		fp->encoding = AUDIO_ENCODING_ULAW;
    519 		fp->precision = 8;
    520 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    521 		return 0;
    522 	case 1:
    523 		strcpy(fp->name, AudioEslinear_le);
    524 		fp->encoding = AUDIO_ENCODING_SLINEAR_LE;
    525 		fp->precision = 16;
    526 		fp->flags = 0;
    527 		return 0;
    528 	case 2:
    529 		strcpy(fp->name, AudioEulinear);
    530 		fp->encoding = AUDIO_ENCODING_ULINEAR;
    531 		fp->precision = 8;
    532 		fp->flags = 0;
    533 		return 0;
    534 	case 3:
    535 		strcpy(fp->name, AudioEalaw);
    536 		fp->encoding = AUDIO_ENCODING_ALAW;
    537 		fp->precision = 8;
    538 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    539 		return 0;
    540 	case 4:
    541 		strcpy(fp->name, AudioEulinear_le);
    542 		fp->encoding = AUDIO_ENCODING_ULINEAR_LE;
    543 		fp->precision = 16;
    544 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    545 		return 0;
    546 	case 5:
    547 		strcpy(fp->name, AudioEslinear);
    548 		fp->encoding = AUDIO_ENCODING_SLINEAR;
    549 		fp->precision = 8;
    550 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    551 		return 0;
    552 	case 6:
    553 		strcpy(fp->name, AudioEulinear_be);
    554 		fp->encoding = AUDIO_ENCODING_ULINEAR_BE;
    555 		fp->precision = 16;
    556 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    557 		return 0;
    558 	case 7:
    559 		strcpy(fp->name, AudioEslinear_be);
    560 		fp->encoding = AUDIO_ENCODING_SLINEAR_BE;
    561 		fp->precision = 16;
    562 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    563 		return 0;
    564 	default:
    565 		return EINVAL;
    566 	}
    567 }
    568 
    569 /*
    570  * Range below -limit- is set to -rate-
    571  * What a pity FM801 does not have 24000
    572  * 24000 -> 22050 sounds rather poor
    573  */
    574 struct {
    575 	int limit;
    576 	int rate;
    577 } fms_rates[11] = {
    578 	{  6600,  5500 },
    579 	{  8750,  8000 },
    580 	{ 10250,  9600 },
    581 	{ 13200, 11025 },
    582 	{ 17500, 16000 },
    583 	{ 20500, 19200 },
    584 	{ 26500, 22050 },
    585 	{ 35000, 32000 },
    586 	{ 41000, 38400 },
    587 	{ 46000, 44100 },
    588 	{ 48000, 48000 },
    589 	/* anything above -> 48000 */
    590 };
    591 
    592 int
    593 fms_set_params(addr, setmode, usemode, play, rec)
    594 	void *addr;
    595 	int setmode, usemode;
    596 	struct audio_params *play, *rec;
    597 {
    598 	struct fms_softc *sc = addr;
    599 	int i;
    600 
    601 	if (setmode & AUMODE_PLAY) {
    602 		play->factor = 1;
    603 		play->sw_code = 0;
    604 		switch(play->encoding) {
    605 		case AUDIO_ENCODING_ULAW:
    606 			play->factor = 2;
    607 			play->sw_code = mulaw_to_slinear16_le;
    608 			break;
    609 		case AUDIO_ENCODING_SLINEAR_LE:
    610 			if (play->precision == 8)
    611 				play->sw_code = change_sign8;
    612 			break;
    613 		case AUDIO_ENCODING_ULINEAR_LE:
    614 			if (play->precision == 16)
    615 				play->sw_code = change_sign16_le;
    616 			break;
    617 		case AUDIO_ENCODING_ALAW:
    618 			play->factor = 2;
    619 			play->sw_code = alaw_to_slinear16_le;
    620 			break;
    621 		case AUDIO_ENCODING_SLINEAR_BE:
    622 			if (play->precision == 16)
    623 				play->sw_code = swap_bytes;
    624 			else
    625 				play->sw_code = change_sign8;
    626 			break;
    627 		case AUDIO_ENCODING_ULINEAR_BE:
    628 			if (play->precision == 16)
    629 				play->sw_code = change_sign16_swap_bytes_le;
    630 			break;
    631 		default:
    632 			return EINVAL;
    633 		}
    634 		for (i = 0; i < 10 && play->sample_rate > fms_rates[i].limit;
    635 		     i++)
    636 			;
    637 		play->sample_rate = fms_rates[i].rate;
    638 		sc->sc_play_reg = (play->channels == 2 ? FM_PLAY_STEREO : 0) |
    639 		    (play->precision * play->factor == 16 ? FM_PLAY_16BIT : 0) |
    640 		    (i << 8);
    641 	}
    642 
    643 	if (setmode & AUMODE_RECORD) {
    644 
    645 		rec->factor = 1;
    646 		rec->sw_code = 0;
    647 		switch(rec->encoding) {
    648 		case AUDIO_ENCODING_ULAW:
    649 			rec->sw_code = ulinear8_to_mulaw;
    650 			break;
    651 		case AUDIO_ENCODING_SLINEAR_LE:
    652 			if (rec->precision == 8)
    653 				rec->sw_code = change_sign8;
    654 			break;
    655 		case AUDIO_ENCODING_ULINEAR_LE:
    656 			if (rec->precision == 16)
    657 				rec->sw_code = change_sign16_le;
    658 			break;
    659 		case AUDIO_ENCODING_ALAW:
    660 			rec->sw_code = ulinear8_to_alaw;
    661 			break;
    662 		case AUDIO_ENCODING_SLINEAR_BE:
    663 			if (play->precision == 16)
    664 				play->sw_code = swap_bytes;
    665 			else
    666 				play->sw_code = change_sign8;
    667 			break;
    668 		case AUDIO_ENCODING_ULINEAR_BE:
    669 			if (play->precision == 16)
    670 				play->sw_code = swap_bytes_change_sign16_le;
    671 			break;
    672 		default:
    673 			return EINVAL;
    674 		}
    675 		for (i = 0; i < 10 && rec->sample_rate > fms_rates[i].limit;
    676 		     i++)
    677 			;
    678 		rec->sample_rate = fms_rates[i].rate;
    679 		sc->sc_rec_reg =
    680 		    (rec->channels == 2 ? FM_REC_STEREO : 0) |
    681 		    (rec->precision * rec->factor == 16 ? FM_REC_16BIT : 0) |
    682 		    (i << 8);
    683 	}
    684 
    685 	return 0;
    686 }
    687 
    688 int
    689 fms_round_blocksize(addr, blk)
    690 	void *addr;
    691 	int blk;
    692 {
    693 	return blk & ~0xf;
    694 }
    695 
    696 int
    697 fms_halt_output(addr)
    698 	void *addr;
    699 {
    700 	struct fms_softc *sc = addr;
    701 	u_int16_t k1;
    702 
    703 	k1 = bus_space_read_2(sc->sc_iot, sc->sc_ioh, FM_PLAY_CTL);
    704 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, FM_PLAY_CTL,
    705 			  (k1 & ~(FM_PLAY_STOPNOW | FM_PLAY_START)) |
    706 			  FM_PLAY_BUF1_LAST | FM_PLAY_BUF2_LAST);
    707 
    708 	return 0;
    709 }
    710 
    711 int
    712 fms_halt_input(addr)
    713 	void *addr;
    714 {
    715 	struct fms_softc *sc = addr;
    716 	u_int16_t k1;
    717 
    718 	k1 = bus_space_read_2(sc->sc_iot, sc->sc_ioh, FM_REC_CTL);
    719 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, FM_REC_CTL,
    720 			  (k1 & ~(FM_REC_STOPNOW | FM_REC_START)) |
    721 			  FM_REC_BUF1_LAST | FM_REC_BUF2_LAST);
    722 
    723 	return 0;
    724 }
    725 
    726 int
    727 fms_getdev(addr, retp)
    728 	void *addr;
    729 	struct audio_device *retp;
    730 {
    731 	*retp = fms_device;
    732 	return 0;
    733 }
    734 
    735 int
    736 fms_set_port(addr, cp)
    737 	void *addr;
    738 	mixer_ctrl_t *cp;
    739 {
    740 	struct fms_softc *sc = addr;
    741 
    742 	return (sc->codec_if->vtbl->mixer_set_port(sc->codec_if, cp));
    743 }
    744 
    745 int
    746 fms_get_port(addr, cp)
    747 	void *addr;
    748 	mixer_ctrl_t *cp;
    749 {
    750 	struct fms_softc *sc = addr;
    751 
    752 	return (sc->codec_if->vtbl->mixer_get_port(sc->codec_if, cp));
    753 }
    754 
    755 void *
    756 fms_malloc(addr, direction, size, pool, flags)
    757 	void *addr;
    758 	int direction;
    759 	size_t size;
    760 	int pool, flags;
    761 {
    762 	struct fms_softc *sc = addr;
    763 	struct fms_dma *p;
    764 	int error;
    765 	int rseg;
    766 
    767 	p = malloc(sizeof(*p), pool, flags);
    768 	if (!p)
    769 		return 0;
    770 
    771 	p->size = size;
    772 	if ((error = bus_dmamem_alloc(sc->sc_dmat, size, PAGE_SIZE, 0, &p->seg,
    773 				      1, &rseg, BUS_DMA_NOWAIT)) != 0) {
    774 		printf("%s: unable to allocate dma, error = %d\n",
    775 		       sc->sc_dev.dv_xname, error);
    776 		goto fail_alloc;
    777 	}
    778 
    779 	if ((error = bus_dmamem_map(sc->sc_dmat, &p->seg, rseg, size, &p->addr,
    780 				    BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) {
    781 		printf("%s: unable to map dma, error = %d\n",
    782 		       sc->sc_dev.dv_xname, error);
    783 		goto fail_map;
    784 	}
    785 
    786 	if ((error = bus_dmamap_create(sc->sc_dmat, size, 1, size, 0,
    787 				       BUS_DMA_NOWAIT, &p->map)) != 0) {
    788 		printf("%s: unable to create dma map, error = %d\n",
    789 		       sc->sc_dev.dv_xname, error);
    790 		goto fail_create;
    791 	}
    792 
    793 	if ((error = bus_dmamap_load(sc->sc_dmat, p->map, p->addr, size, NULL,
    794 				     BUS_DMA_NOWAIT)) != 0) {
    795 		printf("%s: unable to load dma map, error = %d\n",
    796 		       sc->sc_dev.dv_xname, error);
    797 		goto fail_load;
    798 	}
    799 
    800 	p->next = sc->sc_dmas;
    801 	sc->sc_dmas = p;
    802 
    803 	return p->addr;
    804 
    805 
    806 fail_load:
    807 	bus_dmamap_destroy(sc->sc_dmat, p->map);
    808 fail_create:
    809 	bus_dmamem_unmap(sc->sc_dmat, p->addr, size);
    810 fail_map:
    811 	bus_dmamem_free(sc->sc_dmat, &p->seg, 1);
    812 fail_alloc:
    813 	free(p, pool);
    814 	return 0;
    815 }
    816 
    817 void
    818 fms_free(addr, ptr, pool)
    819 	void *addr;
    820 	void *ptr;
    821 	int pool;
    822 {
    823 	struct fms_softc *sc = addr;
    824 	struct fms_dma **pp, *p;
    825 
    826 	for (pp = &(sc->sc_dmas); (p = *pp) != NULL; pp = &p->next)
    827 		if (p->addr == ptr) {
    828 			bus_dmamap_unload(sc->sc_dmat, p->map);
    829 			bus_dmamap_destroy(sc->sc_dmat, p->map);
    830 			bus_dmamem_unmap(sc->sc_dmat, p->addr, p->size);
    831 			bus_dmamem_free(sc->sc_dmat, &p->seg, 1);
    832 
    833 			*pp = p->next;
    834 			free(p, pool);
    835 			return;
    836 		}
    837 
    838 	panic("fms_free: trying to free unallocated memory");
    839 }
    840 
    841 size_t
    842 fms_round_buffersize(addr, direction, size)
    843 	void *addr;
    844 	int direction;
    845 	size_t size;
    846 {
    847 	return size;
    848 }
    849 
    850 paddr_t
    851 fms_mappage(addr, mem, off, prot)
    852 	void *addr;
    853 	void *mem;
    854 	off_t off;
    855 	int prot;
    856 {
    857 	struct fms_softc *sc = addr;
    858 	struct fms_dma *p;
    859 
    860 	if (off < 0)
    861 		return -1;
    862 
    863 	for (p = sc->sc_dmas; p && p->addr != mem; p = p->next)
    864 		;
    865 	if (!p)
    866 		return -1;
    867 
    868 	return bus_dmamem_mmap(sc->sc_dmat, &p->seg, 1, off, prot,
    869 			       BUS_DMA_WAITOK);
    870 }
    871 
    872 int
    873 fms_get_props(addr)
    874 	void *addr;
    875 {
    876 	return AUDIO_PROP_MMAP | AUDIO_PROP_INDEPENDENT |
    877 	       AUDIO_PROP_FULLDUPLEX;
    878 }
    879 
    880 int
    881 fms_query_devinfo(addr, dip)
    882 	void *addr;
    883 	mixer_devinfo_t *dip;
    884 {
    885 	struct fms_softc *sc = addr;
    886 
    887 	return (sc->codec_if->vtbl->query_devinfo(sc->codec_if, dip));
    888 }
    889 
    890 int
    891 fms_trigger_output(addr, start, end, blksize, intr, arg, param)
    892 	void *addr;
    893 	void *start, *end;
    894 	int blksize;
    895 	void (*intr) __P((void *));
    896 	void *arg;
    897 	struct audio_params *param;
    898 {
    899 	struct fms_softc *sc = addr;
    900 	struct fms_dma *p;
    901 
    902 	sc->sc_pintr = intr;
    903 	sc->sc_parg = arg;
    904 
    905 	for (p = sc->sc_dmas; p && p->addr != start; p = p->next)
    906 		;
    907 
    908 	if (!p)
    909 		panic("fms_trigger_output: request with bad start "
    910 		      "address (%p)\n", start);
    911 
    912 	sc->sc_play_start = p->map->dm_segs[0].ds_addr;
    913 	sc->sc_play_end = sc->sc_play_start + ((char *)end - (char *)start);
    914 	sc->sc_play_blksize = blksize;
    915 	sc->sc_play_nextblk = sc->sc_play_start + sc->sc_play_blksize;
    916 	sc->sc_play_flip = 0;
    917 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, FM_PLAY_DMALEN, blksize - 1);
    918 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, FM_PLAY_DMABUF1,
    919 			  sc->sc_play_start);
    920 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, FM_PLAY_DMABUF2,
    921 			  sc->sc_play_nextblk);
    922 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, FM_PLAY_CTL,
    923 			  FM_PLAY_START | FM_PLAY_STOPNOW | sc->sc_play_reg);
    924 	return 0;
    925 }
    926 
    927 
    928 int
    929 fms_trigger_input(addr, start, end, blksize, intr, arg, param)
    930 	void *addr;
    931 	void *start, *end;
    932 	int blksize;
    933 	void (*intr) __P((void *));
    934 	void *arg;
    935 	struct audio_params *param;
    936 {
    937 	struct fms_softc *sc = addr;
    938 	struct fms_dma *p;
    939 
    940 	sc->sc_rintr = intr;
    941 	sc->sc_rarg = arg;
    942 
    943 	for (p = sc->sc_dmas; p && p->addr != start; p = p->next)
    944 		;
    945 
    946 	if (!p)
    947 		panic("fms_trigger_input: request with bad start "
    948 		      "address (%p)\n", start);
    949 
    950 	sc->sc_rec_start = p->map->dm_segs[0].ds_addr;
    951 	sc->sc_rec_end = sc->sc_rec_start + ((char *)end - (char *)start);
    952 	sc->sc_rec_blksize = blksize;
    953 	sc->sc_rec_nextblk = sc->sc_rec_start + sc->sc_rec_blksize;
    954 	sc->sc_rec_flip = 0;
    955 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, FM_REC_DMALEN, blksize - 1);
    956 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, FM_REC_DMABUF1,
    957 			  sc->sc_rec_start);
    958 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, FM_REC_DMABUF2,
    959 			  sc->sc_rec_nextblk);
    960 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, FM_REC_CTL,
    961 			  FM_REC_START | FM_REC_STOPNOW | sc->sc_rec_reg);
    962 	return 0;
    963 }
    964 
    965 
    966